16420737 has 8 divisors (see below), whose sum is σ = 21919680. Its totient is φ = 10934480.

The previous prime is 16420721. The next prime is 16420739. The reversal of 16420737 is 73702461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16420737 - 2⁴ = 16420721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16420739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439 + ... + 5747.

It is an arithmetic number, because the mean of its divisors is an integer number (2739960).

Almost surely, 2^16420737 is an apocalyptic number.

It is an amenable number.

16420737 is a deficient number, since it is larger than the sum of its proper divisors (5498943).

16420737 is a wasteful number, since it uses less digits than its factorization.

16420737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6343.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 16420737 is about 4052.2508560058. The cubic root of 16420737 is about 254.1738584844.

The spelling of 16420737 in words is "sixteen million, four hundred twenty thousand, seven hundred thirty-seven".